SATO CL 408e - Manual (Page 112)

Page 6-12
Section 6. Replacement Procedures
SATO CL408e/CL412e Service Manual PN 9001078
Rev. B
6-6 Replacing the Timing Belts
Timing Belt "A" is used to transmit torque from the stepper motor to the platen pulley via a
set of toothed pulleys.
Timing Belt "B" is used to transmit torque from the platen pulley to the ribbon roller via
another set of toothed pulleys.
STEP PROCEDURE
1. Switch the printer OFF and disconnect the power cable.
2. Raise the access door and remove (2) screws holding the side cover to the
inside frame. Figs. 6-1
3. Remove (2) screws holding the side cover to the outside frame. Remove the
cover to expose the electronics.
4. Detach the connector from the main PCB to the display panel PCB. Fig. 6-11
5. Remove tension from Belt "B" by loosening (4) stepper motor mounting
screws. Move the motor up in the bracket so belt slides from the motor shaft.
Remove the belt. Fig. 6-12
6. Remove the center screw holding the shaft supporter to the ribbon frame (and
connects to the ribbon rewind shaft)while using a wrench on the opposite end
of the shaft (in the mechanical section) to prevent the shaft from slipping.
Pull the shaft back towards the mechanical section just enough so that belt "A"
slides off the end of the shaft. Remove the belt.
Figs. 6-13
7. Replace the belts reversing steps 4-6.
8. Check belt tension and adjust as necessary per Section 5.8.
9. Replace the cover and reconnect the power cable.
DETACH CONNECTOR
Fig. 6-11
LOOSEN (4) STEPPER
MOTOR MOUNTING
SCREWS
Fig. 6-12